bug#13241: 24.2; sh-mode, bash, font-lock; highlight variables in expressions: (( var ))

[Daniel Lublin]

 > I don't quite understand the request -- sh-mode doesn't font-lock
 > variables in other cases, so I don't quite see why it should font-lock
 > variables inside (( )) constructs?

 But it does? At least in `foo=bar` `foo` gets the
 font-lock-variable-name-face. At least to my understanding of "font-lock".

 But, I'm no really bothered by this, and wouldn't mind the issue being
 closed.